Description: Data integrity protection in the context of IoT security refers to the measures implemented to ensure that the information collected by devices connected to the Internet remains accurate, complete, and unaltered. This is crucial, as IoT devices, ranging from sensors in smart homes to medical equipment, generate and transmit large volumes of data that can be vulnerable to malicious tampering or errors. Data integrity ensures that the information is reliable and that decisions based on it are correct. To achieve this, various techniques are used, such as encryption, authentication, and the use of hash algorithms, which allow verification that the data has not been modified during transmission or storage. Additionally, the implementation of access controls and auditing policies also plays a fundamental role in protecting data integrity, ensuring that only authorized users can make changes to the information. In an increasingly interconnected world, where trust in data is essential for the functioning of critical systems, data integrity protection becomes a fundamental pillar of IoT security.